GB1529056A - Snap-action electrical switch elements - Google Patents

Snap-action electrical switch elements

Info

Publication number
GB1529056A
GB1529056A GB4972674A GB4972674A GB1529056A GB 1529056 A GB1529056 A GB 1529056A GB 4972674 A GB4972674 A GB 4972674A GB 4972674 A GB4972674 A GB 4972674A GB 1529056 A GB1529056 A GB 1529056A
Authority
GB
United Kingdom
Prior art keywords
blade
tongues
arms
base portion
snap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4972674A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robertshaw US Holding Corp
Original Assignee
Ranco Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ranco Inc filed Critical Ranco Inc
Priority to GB4972674A priority Critical patent/GB1529056A/en
Priority to SE7512768A priority patent/SE411693B/en
Priority to DE2551147A priority patent/DE2551147B2/en
Priority to IT69818/75A priority patent/IT1050647B/en
Priority to AU86638/75A priority patent/AU503939B2/en
Priority to DK513175A priority patent/DK144929C/en
Priority to JP50138021A priority patent/JPS5173268A/ja
Priority to FR7535005A priority patent/FR2291598A1/en
Priority to US05/668,289 priority patent/US4118610A/en
Publication of GB1529056A publication Critical patent/GB1529056A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/18—Energy stored by deformation of elastic members by flexing of blade springs
    • H01H5/20—Energy stored by deformation of elastic members by flexing of blade springs single blade moved across dead-centre position

Landscapes

  • Thermally Actuated Switches (AREA)

Abstract

1529056 Springs RANCO Inc 17 Nov 1975 [16 Nov 1974 27 March 1975] 49726/74 and 12857/75 Heading F2S [Also in Division H1] A snap action switch blade comprises a closed loop defined by a pair of arms 2, 3 integral with a base portion 1 and by a bridge portion 4 drawing together the ends of the two arms 2, 3 to prestress the blade, the base portion 1 being connected to two tongues 7, 8 projecting respectively into and out of the loop. In one embodiment, a beryllium-copper blade includes an integral bridge portion 4 which carries a contact 6 at the centre or one end thereof and which is formed with at least one kink 10, 11 to prestress the blade. In use, the blade is anchored by one of the tongues 7, 8 and is moved with a snap action by a switch operating member acting on the other tongue or on the base portion 1. In another embodiment, (Fig. 5, not shown) a separate bridge portion 4 is joined to the ends of the two arms 2, 3. The blade may be formed of bimetal and the tongues 7, 8 may be curved.
GB4972674A 1974-11-16 1974-11-16 Snap-action electrical switch elements Expired GB1529056A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
GB4972674A GB1529056A (en) 1974-11-16 1974-11-16 Snap-action electrical switch elements
SE7512768A SE411693B (en) 1974-11-16 1975-11-13 ELECTRICAL CONTACT ELEMENT WITH SNAPPING EFFECT
DE2551147A DE2551147B2 (en) 1974-11-16 1975-11-14 Switching element for a snap switch
IT69818/75A IT1050647B (en) 1974-11-16 1975-11-14 SLAT FOR LATCH SWITCHES
AU86638/75A AU503939B2 (en) 1974-11-16 1975-11-14 Snap action switchblade
DK513175A DK144929C (en) 1974-11-16 1975-11-14 SNAP SWITCH CONTACT ELEMENT
JP50138021A JPS5173268A (en) 1974-11-16 1975-11-17
FR7535005A FR2291598A1 (en) 1974-11-16 1975-11-17 Switching element for snap-action switch - consists of loop made of elastic material
US05/668,289 US4118610A (en) 1974-11-16 1976-03-18 Snap action switch blades

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4972674A GB1529056A (en) 1974-11-16 1974-11-16 Snap-action electrical switch elements

Publications (1)

Publication Number Publication Date
GB1529056A true GB1529056A (en) 1978-10-18

Family

ID=10453334

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4972674A Expired GB1529056A (en) 1974-11-16 1974-11-16 Snap-action electrical switch elements

Country Status (1)

Country Link
GB (1) GB1529056A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2210506A (en) * 1987-09-15 1989-06-07 Bk Patent Dev Snap action devices and methods and apparatus for making same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2210506A (en) * 1987-09-15 1989-06-07 Bk Patent Dev Snap action devices and methods and apparatus for making same
GB2210506B (en) * 1987-09-15 1991-11-06 Bk Patent Dev Methods and apparatus for making snap action devices

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee